Diffuse cavernous haemangioma of the rectum and sigmoid colon.
D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D006391:Hemangioma / Q000000981:diagnostic imaging; D006392:Hemangioma, Cavernous / Q000150:complications / Q000175:diagnosis*; D006406:Hematoma / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012004:Rectal Neoplasms / Q000175:diagnosis* / Q000601:surgery; D012811:Sigmoid Neoplasms / Q000175:diagnosis* / Q000601:surgery